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Invasions By Alien Plants Have Been Mapped In European Union

Date:
January 27, 2009
Source:
Wiley - Blackwell
Summary:
Biological invasions are one of the major threats to biodiversity and in many cases they have considerable impact on economy and human health. For their effective management it is important to understand which areas and ecosystems are at the highest risk of being invaded.
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Giant Knotweed, an invasive species from the Far East Sakhalin Island, which threatens biodiversity of natural habitats in Europe.
Credit: Image courtesy of Milan Chytrý

Biological invasions are one of the major threats to biodiversity and in many cases they have considerable impact on economy and human health. For their effective management it is important to understand which areas and ecosystems are at the highest risk of being invaded.

The first map of the level of alien plant invasions in European Union was published in the Wiley-Blackwell journal Diversity and Distributions.

An international team of Czech, Spanish and British plant ecologists investigated species composition of vegetation in more than 50 000 sites in northwestern, southern and central Europe. In each of these sites they quantified the proportion of alien to native plant species.

“We found that the highest risk of alien plant invasions was in agricultural and urban ecosystems. Low levels of invasion were in natural and semi-natural grasslands and most woodlands, and the lowest levels in the Mediterranean evergreen vegetation, heathlands and peatlands. This pattern was quite consistent among European regions with contrasting climates, biogeography, history and socio-economic background”, said senior author Milan Chytrý from Masaryk University, Brno, Czech Republic.

“The level of plant invasions basically depends on the distribution of different ecosystem types across Europe. High levels of invasion are typical of lowland areas of western and central Europe while low levels are found in northern Europe and mountain regions across the continent. Low levels of invasion also occur in the Mediterranean region except its coastline and irrigated fields”, added Petr Pyšek from the Institute of Botany Pruhonice, Academy of Sciences of the Czech Republic.


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The above post is reprinted from materials provided by Wiley - Blackwell. Note: Materials may be edited for content and length.


Journal Reference:

  1. Chytrý et al. European map of alien plant invasions based on the quantitative assessment across habitats. Diversity and Distributions, 2009; 15 (1): 98 DOI: 10.1111/j.1472-4642.2008.00515.x

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Wiley - Blackwell. "Invasions By Alien Plants Have Been Mapped In European Union." ScienceDaily. ScienceDaily, 27 January 2009. <www.sciencedaily.com/releases/2009/01/090122080935.htm>.
Wiley - Blackwell. (2009, January 27). Invasions By Alien Plants Have Been Mapped In European Union. ScienceDaily. Retrieved July 30, 2015 from www.sciencedaily.com/releases/2009/01/090122080935.htm
Wiley - Blackwell. "Invasions By Alien Plants Have Been Mapped In European Union." ScienceDaily. www.sciencedaily.com/releases/2009/01/090122080935.htm (accessed July 30, 2015).

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